34 they obtain adequate housing shall be granted them for the importation of such articles, provided that the United States Forces issue a certificate stating that the person concerned has not accomplished such importation and indicating the date upon which he obtained adequate housing and its address; (b) Vehicles imported by such persons for their private use, and the spare parts required for proper maintenance of such vehicles. The Joint Committee shall establish the limitations on the quantity and frequency of imports of such vehicles and parts; I (c) A reasonable quantity of articles for the private use of such persons, imported as personal baggage or sent into the Republic of Panama throidgh the military post offices of the United States; (d) Such other imports as may be expressly authorized by the competent authorities of the Republic of Panama at the request of the United States Forces. (4) The exemptions granted in paragraph (3) of this Article shall apply only to cases involving the importation of articles exempted at the time of entry and shall not be construed as obligating the Republic of Panama to reimburse customs duties and domestic taxes collected by the Republic of Panama in connection with purchases of goods from Panamanian sources subsequent to their importation. (5) Customs inspections shall not be made in the following cases: (a ) Members of the Forces traveling under orders, other than leave orders, who enter or depart from the Republic of Panama; (b) Official documents under official seal and mail sent through the military postal channels of the United States; (c) Cargo consigned to the United States Forces. TIAS 10032